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I am going through the installation tutorial for ISPConfig3 on Ubuntu 8.04 Server, and was just curious before I get too much farther in here, whether I need to worry about this ominous message/error:

I have run the steps to the 'T' even cutting and pasting some, including the pear install line as you will see.

Also, my install of Ubuntu 8.04 is via "The Perfect Server" Which I also followed as closely as possible. It is installed to a VM. I got an 8.04 appliance from VMTN and then fresh installed my .iso over top.